Pressure reducing or relief valve



Sept. 20, 1932. A MOORE PRESSURE REDUCING OR RELIEF VALVE Filed June 28. 1928 ATTORN EY-S Patented Sept 20, 1932 UNITED; STATES? PATENT O F E ARLINGTON MOORE," OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO

MAXMOOB CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE rnnssimn REDUCING on nnmnr vALvn Application filed June as, 1928. Serial No. 289,023.

My invention relates'tomeansfor controlling the delivery of gasesunder pressure; and

the same has for its object more particularly to" provide a simple,

vice which permits of the discharge of small the device becoming clogged 'due to any im- 7 i head'12 of the cylinder 13 of an internal comquantities of the gases at reduced pressure from" the available supply thereof without purities, such as carbon, in said gases.

efficient and durable de-" Another object of said invention is to pro-f vide'adevice of the'character specified in which the passages thereof are relatively ample in size not liable to clog, and in which a vibrating valve member operating within relatively constricted limits serves to control the delivery of the gases in relatively small quantities through said passages, and to maintain by the vibratory movement thereof the clearance between the same and its scat substantially freefrom foreign matter.

Further, said invention has for its obyec't to provide a which is capable of controlling the passage or discharge of hi gh pres'sure gases at relatlvely high temperatures, 'suclras the cylinder gases of an internal combustion engine. Further, saidinvention has for its object-to rovide a devicefof the character specified in which the means for controlling the extent of opening of the movable valve member acts as a support foe, afreely movable centering member serving lto'insure'the return of the device of the characterispecified' valve member to closed position properly seated.

Other objects a in part be pointed out hereinafter.

To the attainment of the aforesaid objects will in part be obvious'and cylinder 13 r separate valve seat 24' disposed within the pressure element upon the base 18 is -pro-' modification ;,and

Fig.3 is an enlarged dtafl'isectional view showing-the formation of the valve seat and centering member. j 7

Referring to the drawing, the pressure device or'element 10 at Fig.1, shown as one ex-' ample, is incorporated in the water-backed The head 12 is provided bustion engine. with a cylindrical recess or chamber 14 formed therein; the latter being surrounded 16 of the head cross-section through the head 12' provides] communication between the interior of-the and the recess or chamber 14. i A

vided with a conical recess 26 having a passage28 registering with the'passage 22. The

22'and' 28 are sufiiciently large so passages as not to become readily clogged by any carbon or other solids present'in' the gases.- A

spherical valve member, such as the ball 30,'is 7 adapted to rest within the recess 26 to close the device, inder gases so that the passage is open at all times when the cylinder pressure exceeds the ballSO is freely movable, except for its own Weight and that of the centering sleeve 82 therefor loosely sliding on the stem 34:. No

and is-lifted by' the escap'ingcylpressureon the other side of the ball. The I spring is employed for retaining the'ball seated in the device shown at Fig. 1. I

A threaded plug 36,having anair tight gasket and closing the upper end 2001? the chamber 14 carries the stem 34: which projects' downward towards the ball 3O and pro- 1 vides a stop for limiting the movement of said ball. The plug 36, when properly adform ofdevice constructed according 'to and justed emu of play or v1 ratory movement of the valve serves to "control the amount 30. The sleeve '32 is provided with a conical recess 38 at the lower end thereof adapted to engage the ball 30 to return the same to and retain the same centrally upon the seat 24 within the recess'26.. As shown more clearly at Fig. 3, the conical recesses 26 and 38 have the surfaces thereof at an angle of substantially 45 to the axis so that the conical surfaces thereof as the ball strikes the same are normal to the radii of the ball and the stresses imposed on the ball are transmitted towards the center thereof and not eccentrically. This prevents the ball from becoming flattened or distorted, prolonging the life thereof and insuring that the ball will evenly seat to prevent leakage even after consider-,

able use thereof. The members 24 and 30 are preferably made of heat-resisting chrome steel, chrome nickel steel, or the like. The chamber 14 above the ball 30 is provided with a lateral outlet through which the gases are conducted. The stem 34 is so positioned that the maximum size ofthe clearance between the ball and its seat when the ball is lifted is substantially less than the size of the passages 22 and 28. The size of the clearance is such as to not unduly decrease the pressure within the-cylinders, and the rapid vibra-- tory movement of the ball 30 serves to main- ;tain said clearance substantially free from solid matter.

At Fig. 2, I show a pressure element or valve casing 10a which is separate from the cylinder wall,.the same being adapted to be screwed into the cylinder head preferably in place of the pet cock. The valve shown at Fig. 2 is constructed to permit of the passage of engine gases, when the pressure in the cylinder exceeds a predetermined amount, which ;;-is alwaysin substantial excess of the highest normal compression pressure being encountered in a particular engine. .In the form shown, the same comprises a casting 42 having a screw threaded neck 44 which may be 3 screwed into the engine cylinder preferablyinto the pet cockhole, and. the heat radiating .fins,46 serving as a substitute for or the T1 equivalent of the water-backed construction shown at Fig. 1. The device contains the preferable ball valve 30a adapted to be seated against the seat 24a and a follower 32a which is held againsttfiheball valve by a spring 48. The tension of the spring is adjusted by screwing the plug 50in or out, and said plug is locked in adjusted position by a lockscrew 52. Stop means are provided for limiting the extent of opening of the ball valve 30a. In

' the formsho'wn, the sam'e comprises a screw pin or stem 34a screwed in plug 50 and extending through aligned openin s therein and in the follower member 32a. in 34a is locked in adjusted position by a locking screw 54. Cap 56 preferably encloses the adjusting parts so that the adjustment once made will not be unnecessarily tampered with or disturbed. The pressurecasing or element 10a is provided with an outletAOa at the other side of the ball valve through which the cylinder gases are discharged.

The spring pressure on the ball valve 30a is so adjusted that the valve is not opened on the compression stroke even when the normal compression pressures are at the highest. 'Under these circumstances it, of course, does not open on the exhaust stroke during which the pressures are relatively low, and being fin the nature of a check valve, it of course,

' doesnt open on the suction stroke, so that it is open only during that part of the power stroke when the-pressures in the cylinders suction stroke of the engine, an airtight closure.

In my invention, the extent of opening of the ball 30, 30a isadjusted to prevent'unde sirable reduction in pressure within the cylinder.

F urther, in my invention the means for limiting the extent of opening of the valve also serves to retain the follower or centering member 32, 32a in operative relation to the ball at all times to insure that the ball returns :to seated therefor.

This application is a continuation in part of my application Serial No.1l26,265, filed.

position within the conical recess,

April 27, 1925, which application resulted in I Patent N 0. 1,7 66,671, granted June 24, 1930,

in part a continuation of my application Se-J rial No. 228,210, filed October 24, 1927, and

in part a continuation of my rial No. 280,205 filed May 24, 1928. o

I claim: l p 4 1. A device of the character described comprising a hollow portion, a valve seat therein having arecess and an inlet passage into said recess at the base thereof, a ball valve disposed within said hollow portion for moveapplicationSement therein and adapted to engage said seat to close said inlet passage, and means at the opposite side of. said ball valve for limiting the movement thereof and including a portion having a recess cooperating with said valve seat for maintaining said ball centered relative to said seat, said last named recessed portion having a passage therein leading from the recess therein and venting intothe interior of said hollow portion.

2. A device of the character described comprising a hollow portion, a valve seat therein having a conical recess and-'aninlet passage into said recess at the apex thereof, a ball valve disposed within said hollow portion for movement therein and adapted to engage said r seat to close said inlet passage, and means at I the opposite. side of said ball valve adjusted to limit the extent of movement of the ball valve from said seat to obtain a maximum ing towards said ball valve, and'a sleeve loosely sliding on said stem, and having a whereby to transmit the impact stresses radi-' ally of the ball valve during vibratory move ment thereof.

3. A device of the character described comprising a member having a passage therethrough, a valve therein for controlling said passage, a member for controllin the extent of opening of said valve, and a tubular member having a recessed inner end freely mov able on said second named member for maintaining said valve centered to insure the return thereof to seated position.

4. A device of the character described comprising a hollow member having'a valve seatincludmg a conical recess, and a passage into said member through said valve seat, and an outlet from said member, a ball valve ada ted to seat in said recess, a stem dis osed axially within said member for controlling the extent of opening of said ball valve, and a sleeve sliding on said stem, and having a conical recess receiving said ball valve for maintaining said ball valve centered to insure the return thereof to seated position. v

5. A device of the character described comprising a hollow member having a valve seat rovided with a 45 conical recess, and an inet passage to the interior of-said member through said valve seat, and an outlet from said member, a stem in said member extending towards said valve seat, a sleeve sliding loosely'on saidstem and having a 45 conical recess in the end thereof adjacent to said first named recess, and a spherical valve member disposed between said valve seat and sa dsleeve, and adapted to be received'within said conical recesses.

6. A device of the character described comprising a hollow member having an open end, an inlet passage at the opposite end, and a laterally disposed outlet passage, a valve seat therein having a passage registering with said inlet passage, and a conical recess, a ball valve adapted to seat within said conical recess, a threaded plug closing the open end of' said hollow member. a stem thereon extendconical recess to receive said ball valve at the side thereof opposite said first named recess for maintaining said ball valve centered.

- 7. A device of the character described comprising a hollow, member having an open end,

1 and inlet and outlet openings, cooling means disposed aboutsaid member, a ball valve disposed within said member for controlling saidinlet opening, an adjustable plug closing the open end'of said member, a stem thereon serving upon adjustment of said plu to 'control the extent of opening of the ba valve, and a sleeve freely slidable upon said stem and having a conical recess at the lower end thereof adapted to receive said ball valve.

8. A device of the character described comprising a hollow member having an open end,

an inlet passage,'and a lateral outlet,=means for cooling said devlce, a valve seat disposed recess therein in communication with said passage, aball valve on sa1d?va1ve seat;sa1d

valve seat and said ball valve being 'com-' posed of a "heat resisting metal, amadjustable plug closing the open end of said member, a stem extending inwardly from said plug towards said ball valve for controlling the extent of opening thereof, and

a sleeve slidably disposed about said t and having a conical recess at the lowe thereof adapted to receive said ball valy to said ball valve and serving to limit the movement thereof, and a member slidably disposed about said stem and having a conical recess adapted to receive said ball valve; saidball valve and said conical seat having a maximum clearance therebetween of a size substantially lessithan the size of said inlet passage, and subject to the vibratory"action of said ball Jvalve, whereby to restrictthe flow of gases through ,said device without liability of clogging.

10. A device of the character described comprising a member having a passage therethrough and a valve seat, a ball valve adapted at the side of said valve'opposite saidseat for controlling the extent of opening of the valve, and a sleeve sliding on saidstem and 2 adapted to project beyond saidstem. to 'en- 1 seat for controlling the extent of opening of the valve, and a sleeve sliding 'on said stem and having a recessed inner end'adapted to project beyond the stem to engage the ball for centering the same.

within said member and having a conical 7 to seat thereon to closethe passage, a stem 12. .A device of the character described comprising a member having a passage therethrough and an aperturedrecessed valve seat, a ball valve adapted to seat thereon, a stem at the opposite side of said valve serving to limit the valve opening to less than that through the a'perturein the valve seat, and a gravity operated sleeve sliding on said stem and having a recessed inner endadapted to project beyond said stem and constantly engage said valve to center said valve while. allowing full rotary movement thereof between said recesses.

In testimony whereof, I have signed my name hereto.

v ARLINGTON MOORE. 

